Hi , iam having cold from last 5 to 6 days, right now it's almost gone, but still I have nasal mucous . Today I took a sip of cold water and just after 20 mins , I felt shortness of breath , after 1 hours it got reduced and can feel it is coming to normal as iam writing this. Can you tell should I go for further check up? Or is this normal. I dont have cough, fever any thing else. But I have mucous in my nose and throat.